Excavating dipper



Oct. 22, 19,35. w. M. BAGER EXCAVATING DIPPER ,Filed April 26, 1934 llll IIIIJI. l

A TTORNEYS.

Patented oor. 22, 193s UNITED STATES PATENT -oFFlcE ExcAvA'rmc merca William M. Bager, Fox Point, Wis., assignor to Bucyrus-Erie Company, South Milwaukee, Wis.,

a corporation of Delaware Application April 26, 1934, Serial No. 722,424

Bussum 11 Claims. (Cl. 214-145) My invention relates to new and useful improvements in excavating clippers, and more particularly to that type of excavating dipper which is mounted on the end of a handle orhandles J digging teeth.

The bottom opening of. the dipper is closed by a. door, hingedvat the-back"of the dipper, and latched at the-front. l

It is the principal object of my invention to improve the construction of this door, and of the cooperating parts of the clipper proper.

In order for the door to swing clear of -the lcwer opening of the dipper, it is necessary for the hinges to be pivoted well up on the back of the clipper, but this introduces two objectionable features, namely: (l) the hinge is weak- -ened by the necessity of having a long portion of the hinge extending vfrom its pivot to its l and clipper handle end casting when the door yswings open.l

Furthermore-I'have vfound that, with the use of the conventional flat door in digging in sticky material, thegfldoqr on. opening merely breaks maway from-,the bottom. offfthe'` sticky material without dislodgin'g the material from the dipper proper; wherefaalf thedoor bebuilt up to contain somefof the )naterialgthefiexit of the mate, rial is,startedlby theiopeningioi the door. ,And the provision o i/'side walls 'on'the door serves to direct andv cnce x'1i.rate"the fall of the material, instead .of permitting it to scatter.

However, if these side wallsfj'oin the bottom of the door at an abrupt angle and/or ifA they extend clear to the o'pen end of the door, they impede the dumping.

With these considerations in mind, it is' my object to attain the above-described advantages, while avoiding thel abovedescribed disadvantages.

Inl addition to lmy principal object, I have worked out a number of novel and useful details, which will be readily evident as the description progresses.

My invention consists inthe novel parts, and in the combinations and arrangements thereof.,

which are defined in the appended claims; and of which one embodiment is exemplified in the accompanyingdrawing, which is hereinafter particularly described and explained.

'Throughout the description, the same refer- Y ence number is applied to the same member or to similar members.

Figure 1 is a plan view of the door of my clipper, showing in section the rear portion of the hinges andthe latch-keeper on the dipper proper. This view is taken along Tthe line I--I of Figure 3.

'Figure 2 is a lateral vertical section, taken along the yline 2 2 of Figure 1.

Figure 3 is a longitudinal vertical section,

taken alongthe line 3-3 of Figure 1.

Iii of the door I4. The back of the dipper is secured to the dipper-handle or handles (not shown) in any conventional manner.

It is to be noted that the main forward portion I5 of the door is flat, and `that the rearward I B and sideward I1 portions curve upward, so. as to form a door conforming in general to the. shape of `a sugar-scoop.

It is also to be noted that, by virtue of the curved form of the back I6 of the door I4, the

portion of the hinges lying to the rear of the door, is much shorter than in the conventional construction of the prior art.

The door carries the conventional latch I8, and theA clipperA proper carries the conventional latch-keeper I9, both of which may be' of any well-known form.

A'Ihe door may be provided with stiffening ribs 20; but, by virtue of the shape of the door, these may be smaller and fewer than would otherwise be required.

Having now described and illustrated one form of my invention, I wish it toV be understood that my invention is not to be limited to the specific form or arrangement of; parts hereinbefore described, except insofar as such limitations are specified in the appended claims.

I claim:

l1. In an excavating dipper, the combination of: a main body, having a back, two sides and a front, the bottom `edges of the sides sloping upwardly from front to rear; a bottom door, having o. substantially not bottom portion, o. book por- 55 tion tangent thereto and curving gradually upwardly therefrom, and side portions tangent to the nat portion and curving gradually upwardly therefrom, said side portions being less and less high as they approach the front of the door; combined hinges and stiiening ribs, extending beneath a portion of the bottom of the door; and pivots for the hinges, carried by the back of the main body closely adjacent the juncture of this back with the back of the door.

2. In an excavating dipper, the combination of: a main body, having a back, two sides and a front, the bottom edges of the sides sloping upwardly from front to rear; a. bottom door, having a'bottom portion, a back portion curving gradually upwardly from the bottom portion, and side portions curving gradually upwardly from the bottom portion, said side portions being less and less high as they approach the'front of the door; hinges, extending beneath a portion of the bottom of the door; and pivots for the hinges, carried by the back of the main body closely adjacent the juncture of this back with ihe back of the door.

3. In an excavating dipper, the combination of: a main body, having a back, two sides and a front, the bottom edges oi the sides sloping upwardly from front to rear; a bottom door, having a bottom portion, a back portion curving gradually upwardly from the bottom portion, and side portions curving gradually upwardly from the bottom portion; hinges extending beneath a portion of the bottom of the door; and pivots for the hinges, carried by the back of the main body closely adjacent the juncture of this back with the back of the door.

4. In an `excavating dipper, the combination of: a main body, having a. back, two sides and a front, the bottom edges of the sides sloping upwardly from front to rear, and characterized by the fact that the lower edges of the sides slope downwardly and forwardly; a bottom door, having a substantially flat bottom portion substantially perpendicular to the front of the main body, and

havingback and side portions curving upwardly to meet the back and sides of the main body; combined hinges and stiiening ribs, extending beneath a portion of the bottom of the door; and

pivots for the hinges, carried by the back of the main body closely adjacent the juncture of this back with the back of the door.

5. In an excavating dipper, the combination of: a main body, having a back, two sides and a front, the bottom edges of the sides sloping upwardly from front to rear, and characterized by the fact that the lower edges o! the sides slope downwardly and forwardly; a bottom door, having a bottom portion substantially perpendicular to the front of the main body, and having back and side portions curving upwardly to meet the back and sides of the main body; hinges, extending beneath a portion of the bottom of the door;

-and pivots for the hinges, carried by the back of the main body closely adjacent the .juncture oi' this back with the back of the door.

6. In an excavating dipperthe combination "of: a main body, having a back, two sides and a front. the bottom edges of thefsides sloping yupwardly-from front to rear; a bottom door, having its rear portion curved convexly as viewed from the outside, and having its side edges sol Y sloped as to register with the edges of the sides the hinges, carried by the back of the main body 5 closely adjacent the juncture of this back with the back of the door.

7. As a separate article of manufacture, a bottom dump door for an excavating dipper, having: a substantially ilat bottom portion; a back l portion tangent thereto, and curving'gradually upwardly therefrom; side portions -tangent to the ilat portion, and curving gradually upwardly therefrom, said side portions being less and less high as they approach the front of the door; and l combined hinges and stifiening ribs, extending beneath a portion of the bottom of the door; the door being so shaped, and the hinge-pivots so positioned that the edges of juncture of the door to the dipper to which it is applied will slope up- .2O wardly from front to rear.

8. As a separate article of manufacture, a door for an excavating dipper, having: a bottom portion; a back portion, curving gradually upwardly 1 from the bottom portion; side portions, curving gradually upwardly from the bottom portion,'said side portions being less and less high as they appreach the front of the door; and hinges, extending beneath a portion' of the bottom of the door, said hinges having their pivot points closely adjacent the upper edge of the rear portion of the door; the door being so shaped, and the hingegradually upwardly from the bottom portion; and 40 hinges, extending beneath a portion of the bottom of the door, said hinges having their pivot points closely adjacent the upper edge of the rear portion of the door; the door being so shaped, and

the hinge-pivots so positioned that the edges of 4.5

juncture of the door to the dipper to which it is applied will slope upwardly from -front to rear;

10. As aseparate article of manufacture, a bottom dump door for an excavating dipper, having its rear portion curved convexly as viewed from the outside, and having hinges extending beneath a portion of the bottom of the door, said hinges having their pivot points closely adjacent the upper edge of the rear portion of theA door; the door being so shaped, and the hinge-pivots so positioned that the edges of juncture of the door to the dipper to which it is applied will slope upwardly from front to rear.

11. As a, separate article of manufacture, v'a- -door for an excavating dipper, having its rear WILLIAM M. BAGER.A 

